Get 2 days of unlimited access
Study Guides (350,000)
US (190,000)
UCLA (2,000)
GEOG (100)
GEOG 1 (10)
Study Guide

GEOG 1- Midterm Exam Guide - Comprehensive Notes for the exam ( 15 pages long!)


Department
Geography
Course Code
GEOG 1
Professor
Bridget Gonzalez
Study Guide
Midterm

This preview shows pages 1-3. to view the full 15 pages of the document.
UCLA
GEOG 1
MIDTERM EXAM
STUDY GUIDE

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

Hydrologic Cycle
Surface processes
Interception
Runoff
oDepends on infiltration capacity of soil and size of soil | Coarse soil increases infiltration |
Frozen soil
oAngle/Steepness of slopes: More runoff on steeper slopes
oRainfall duration: Longer rainfall duration = more runoff
Storage
oPermeability
oPorosity
oInfiltration capacity
oVadose zone: Zone of aeration or unsaturated zone – only saturated during periods of heavy
precipitation
oPercolation: Movement of water under the influence of gravity from the upper part of the
soil down through the pores to deeper horizons or underlying rocks
oCapillary action: Drawing of water from wetter to drier soil
oField capacity: Maximum amount of water that soil can hold by capillary tension: the force
that holds water in small pores against the force of gravity | Plant roots able to absorb
water from soil at field capacity until only hygroscopic water is left
oWilting point: Remaining soil moisture is held so tightly by forces of soil adhesion that plants
wilt
oMoisture retention capacity: Water content at field capacity minus the content at wilting
point | Typically the amount of water available for use by plants
Loss
oEvaporation: More than 50% of annual rainfall
oEvapotranspiration: Water lost to the atmosphere by plants
Groundwater
Phreatic zone: Zone of saturation
Water table: Saturated zone below the soil that can flow directly into streams
oSubdued reflection of topography
find more resources at oneclass.com
find more resources at oneclass.com
You're Reading a Preview

Unlock to view full version

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

Deep percolation: Found in humid areas where water has not been lost to other processes
oSand and gravel hold a lot of water
oCemented layers and bedrock can have high permeability
Groundwater depletion is an issue
Aquifers: Porous and permeable layers that can be at least partially saturated
Aquicludes: Layers of impermeable rock.
oConfined aquifer exists between aquicludes
Groundwater discharge: Water table intersects the ground surface
oSpring: Where discharge forms a stream of flowing water that emerges from the ground
Perched water table: Separate water table at a higher elevation than the main water table
Groundwater recharge: Replacement of water lost from the aquifer through infiltration and
percolation of water from surface
Artesian well: Water that rises to the surface under its own natural pressure
Cone of depression: Excessive withdrawal causes the local water table directly surrounding the well
to drop
Hillslope Fluvial Erosion Processes
Rainsplash erosion: Downhill movement of soil due to raindrop impact
Sheet erosion: Detachment of soil by sheet flow
Rills and gullies: Channels
oTransport water, eroded soil into permanent streams
Streams and sediment transport
Drainage basin: Complete river system of the trunk and its tributaries
oThe entire area of hillslope and channel areas which drain to a common point downstream
oDrainage divide: High point from which water flows away | Separates two drainage basins
from one another
oDrainage patterns: Trellis, rectangular, dendritic, radial
oDrainage density: Combined total length of the stream channels within a unit area
oHigher the drainage density, more rapid and efficient is the transport is erosion especially in
badlands
Ability of streams and river channels to transport sediment from upper course to lower course
find more resources at oneclass.com
find more resources at oneclass.com
You're Reading a Preview

Unlock to view full version